Bosch Alternator 12V 160A BX525085

Bosch alternator, 12V and 160A, part number BX525085, supplied new as an each unit. It is listed with internal regulation, a twin leg alternator mount, and a 22mm shaft diameter, so it is best checked against the vehicle’s existing mounting and electrical details before ordering.

The mounting measurements provided are inside mounting legs 101mm and mount centre to centre 198mm, with 13mm pivot hole diameter and 13mm adjusting hole diameter. Those dimensions are important when confirming that the alternator will physically sit in the bracket set-up already on the machine.

This unit is identified as Bosch unit make, with pin code IR189 and a one year warranty. It is described as being made from high quality raw materials, corrosion resistant, and fitted with a reduction drive to help maintain continual speeds for easier starting.

Key Features

• 12V alternator with 160A output
• Bosch part number BX525085
• Internal regulator type
• Twin leg alternator mount
• New unit, not remanufactured
• Corrosion resistant construction

Specifications

• Voltage: 12V
• Power rating: 160A
• Type: alternator
• Brand: Bosch
• Part No.: BX525085
• Pin code: IR189
• Regulator type: Internal
• Alternator mount: Twin leg

Fitment guidance

• This alternator is listed against a wide range of heavy vehicle, industrial, agricultural, and earthmoving applications.
• Recorded makes include AGCO Allis, Atkinson, Bomag, Case, Caterpillar, Champion, Cummins, Detroit Diesel, Ford, Freightliner, International, Iveco, John Deere, Kenworth, Mack, Morooka, New Holland, Sterling Trucks, and Tigercat.
• Sample applications shown include AGCO Allis 9435, 9455, 9675 and 9695; Bomag BM1200/30 and BM1300/30; Case 9050B, 921, 921C and 921CXR; Caterpillar 120K, 120M, 12K, 12M, 140K, 140M and 160K; Cummins ISB 6.7, M11-C270 and N855.
• Other sample listings include Detroit Diesel 6V92T, Ford 900-series and 9000-series, Freightliner Argosy and Century, International 4000-series and 7000-series, John Deere 540E and 644E, Kenworth C-series and T-series, Mack CH and E7, New Holland 9282 and 9700, and Tigercat 615C and 724D.

Application and Buying Notes

Before buying, compare the part number BX525085, the Bosch unit make, and the physical dimensions against the alternator already fitted to the machine. The 12V system voltage, 160A output, 22mm shaft diameter, and twin leg mount all need to line up with the existing application if the replacement is to be suitable.

The internal regulator type is another key point. If the original alternator uses a different regulation setup, the wiring and charging arrangement may not match. The 101mm inside mounting legs, 198mm mount centre to centre, and 13mm pivot and adjusting holes should be checked carefully, especially where bracket spacing is tight or the alternator sits in a confined engine bay.

This is a new alternator and it weighs 7.651kg, so handling and installation should be planned accordingly. The reduction drive feature and corrosion resistant construction are useful product details, but they do not replace the need to confirm the correct application and mounting arrangement on the vehicle or equipment.

If you are matching from an old unit, use the label, housing details, and any visible code such as IR189 to cross-check what is already installed. That is the safest way to avoid ordering by description alone, particularly across makes such as Caterpillar, Cummins, International, Kenworth, Mack, and New Holland where similar alternators can still differ in mount or shaft dimensions.

Before supply, the safest approach is to confirm the original unit details against the listed part number, voltage, output rating, mounting arrangement, and pulley configuration. That checking process is standard practice in the parts trade because visually similar units can still differ in service-critical ways.

For workshop, fleet, and equipment applications, accurate identification of part number BX525085 helps avoid unnecessary freight, additional labour, and vehicle or machine downtime. Where the application is not straightforward, the original unit, OEM reference, or workshop records should be used as the primary confirmation point.

Relevant published details for this unit include Type ALTERNATOR, Unit of Measure EACH, Warranty One Year, Inside Mounting Legs 101mm, Pivot Hole Diameter 13, Regulator Type Internal, Suits Unit Make Bosch, Alternator Mount Twin Leg, New / Reman. New, Weight 7.651kg.

Additional published details for cross-checking include Product Group 1 ROTATING ELECTRICAL, Part No. BX525085, Brand BOSCH, Description Bosch Alternator 12V 160A, Adjusting Hole Diameter 13, Pin Code IR189, Power Rating (Amp) 160, Shaft Diameter 22mm, Voltage 12, Mount Cnt to Cnt 198mm.

Bosch Alternator 12V 160A. Part number BX525085 should be checked first. Listed voltage is 12. Listed output rating is 160. These details form the core reference points used by parts interpreters when confirming the correct replacement.

Mount style is Twin Leg. Regulator type is Internal. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number BX525085, the normal identification sequence is part number, electrical rating, mounting arrangement, connector or terminal style, and pulley or drive details. Using those checkpoints helps confirm that the listed unit matches the service requirement rather than only looking similar.

For a alternator in workshop, fleet, trade, agricultural, or construction service, the listed voltage 12 and output 160 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Available application references include AGCO ALLIS 9435, AGCO ALLIS 9455, AGCO ALLIS 9675, AGCO ALLIS 9695, ATKINSON F4870, BOMAG BM1200/30. Even with application listings, final confirmation should still be based on the exact unit being replaced and the service requirements of the vehicle or machine.

Compatibility note: Confirm fitment by checking part number BX525085, the Bosch unit make, and the alternator mounting and shaft measurements against the existing unit before purchase.

FAQ

What is the part number for this alternator?

The part number is BX525085.

What voltage and output does it have?

It is a 12V alternator rated at 160A.

Is this a new or remanufactured unit?

It is listed as new.

What type of regulator does it use?

It uses an internal regulator.

What mounting measurements are provided?

The listed measurements are 101mm inside mounting legs, 198mm mount centre to centre, and 13mm pivot and adjusting hole diameters.

Which vehicle makes are shown in the fitment data?

The fitment data lists makes including AGCO Allis, Atkinson, Bomag, Case, Caterpillar, Cummins, Detroit Diesel, Ford, Freightliner, International, Iveco, John Deere, Kenworth, Mack, Morooka, New Holland, Sterling Trucks, and Tigercat.